Analysis and Design of Battery Controller for More Electric Aircraft Application

This paper deals with innovative multi-function battery controller with seamless transition between controllers for future MEA platforms. The battery controller performs different functions i.e. providing DC power, maintaining DC bus voltage, controlling battery voltage and battery current for charging and discharging process purposes. Due to its superiority and simplicity of implementation, the constant current-constant voltage technique is chosen for battery charging. Furthermore, the study provides a detailed analysis of the proposed approach and control challenges then proposes the corresponding solutions. The PI controller is adopted for all controllers and it was designed to provide a robust control system behaviour. Therefore, the battery terminal voltage and charging current are efficiently limited by the corresponding battery controllers. A robust Energy Management Strategy (EMS) to supervise the charging and discharging process is presented as well. The proposed controller can be suitable for different battery types where only the value of reference voltage and current limit are specific for each battery type. The controller is tested in simulation environment and the results confirm its effectiveness.